The button to the right of the minimize button can look like two different things. They are as follows: . The first one is Maximize, the seccond one is Restore.
This will cause the document to fill up the entire area. When Steno Pad is opened, the document will be maximized.
This will be the button you can see when you open Steno Pad. It will cause the document to fill up only about a half of the area it does when Steno Pad first starts.